I try to find some entry in an Array beginning with 
index 0. I test for false to treat the "not found" event
but don?t find my entrys in the first line.
If i test for 0 i always end up with my fist line.

$this->wochentage_name=array(
		array(0,"Monday","Montag","Mo"),
		array(1,"Tuesday","Dienstag","Di"),
		array(2,"Wednesday","Mittwoch","Mi"),
		array(3,"Thursday","Donnerstag","Do"),
		array(4,"Friday","Freitag","Fr"),
		array(5,"Saturday","Samstag","Sa"),
		array(6,"Sunday","Sonntag","So")
		);

for($i=0;$i<sizeof($this->wochentage_name);$i++)
{
	print_r($this->wochentage_name[$i]);
	echo "ENDE f?r Nummer".$i."<br>";
	$key = array_search($in,$this->wochentage_name[$i]);
 	if($key != 0)
		{
		return $this->wochentage_name[$i][$row];
		}
}